
def foo1(a,b):
    c = 2
    return a + b

def hello():
    print('hello world1')

# 全局变量
title = 'module1 标题'

c = 2

# 判断当前模块是否是作为主模块运行
if __name__ == '__main__':
    print('aaaaaa')
    print('bbbbbb')

